Electromagnetic recording arrangement



- March-28, 1939.

S. BEGUN ELECTROMAGNETIC RECORDING ARRANGEMENT Filed March 19, 1955 Patented 28, 1939' UNITED STATES 2,151,889 mac'raomcnsnc ancoanme mm'r Semi BegumBer Lorenz ARRANGE- Germany, assignor' to 0.

Aktiengesellschaft, Berlin-Tempelhof, Germany, a company Application March. 19, 1935, Serial No. 11,887

In German 2 Claims.

Electromagnetic recording 'machines on the Poulsen principle are frequently arranged to be governed by a suitable controlling mechanism from a distantly located place, especially if they 5 n are to record dictations or telephonic communications.

In this case it is desirable that the speaking person may be able to ascertain how long the machine will still be able to record; that is, to ascertain the length of that piece of steel wire or tape which is still available for recording.

It has been proposed to connect with an indi cating device fitted to the frame or casing in which the spools carrying this wire or tape-are mounted, means which after the movement of the wire has been finished will stop the machine and transmit a signal to the controlling station, i. e. the place where the speaking person is. Such a provision, however, does not enable him to finish 20 his dictation in due time or to shorten it.

In accordance with the invention, signals are transmitted to the speaking person each time the record carrier, for instance the said wire or tape, has been -moved a predetermined distance? so transmitting a dictation or a telephonic'commu nication or, in other words, how inuch'of'the available.-

hereafter by way of example, reference being had to the accompanying drawing which is'a'par whichare provided with the record carrier, 1. e.

a steel'wire or tape, for example, in such a manner that this wire or the like can be wound from one spool onto the other and then be recoiled,

'- as is customary with telegraphons and like devices. The record carrier is not shown. Spool l is adapted to be driven by a motor 3. The frame piece i' has a bearing 4 for a screw 5. The screw 5 is by a suitable gearing 6' connected with the motor 3 and carries a nut 1 arranged to be displaced along the screw. Projecting into the pathof this nut' are studs 8 which are seated on contact springs 9 and'are guided in a bar In. This and the studs 8 consist of an electrically insulating material. To each spring 9 a-lamp II is allotted. A ringer I2 is adapted to be governed by each of the springs 9. These signalling means ll,. l2 and a battery l3 are disposed at the place M where thespeaking' person is.

that the speaking person shall at any'ti'ine beable recordcarrier has already been used or' isstill' One embodiment of the inventionis described- March 16, 1934 The motor-3' rotates the spool I so as to wind the wire or the like, not shown, from spool 2 onto spool l, and through the gearing 6 acts at the same time to revolve the screw 5. The nut 'l consequently moves along the screw in the direction of the arrow and depresses the studs 8 one after the other. The studs 8 in their turn depress the springs 9 and are restored by these to their normal position'as soon as the nut leaves them. In the drawing, one stud 8 and spring 9 are shown as depressed. The lamps II are hereby successively cut inand out. Each time the ringer i2 is likewise included in the circuit.

The nut 1 by its position on the screw 5 indicates how far the record carrier has been wound on the spool i or unwound from spool 2. The indicators! I, I! enable a similar supervision to be made at place It although this is remote from the recording machine.

In order to effect a saving in wires the time during which each spring 9isdepressedso as to close a circuit maybe different from the time during which any 'of :the other springs is depressed: Imorder to'performthis 'studsI8 may be provided with heads l5 which differ from each other. in 25'v width. By this means special acoustic orv optic signals may beproduced-at place I4 throughihe? medium of.-special"arrangementsof relays or by similar contriv'ances.

Inthecxample shown the lamp ll represented at Z is lit longer. than the lamp I l at Y and this lit longer than the lamp Ii at X while the ringer i2 is actuated accordinglylong' each time, sothat the signals at I4 will be the more impressive the nearer the end of the period of'time available for recording.

What is claimed is: 1. In an electric recording arrangement, the combination of a recording machine and a remotely located dictating station, a plurality of indicators at said; .station, means cooperating with said machine for movement in accordance with the progressive recordingv action of said machine, a plurality of electric contacts controlled by said cooperating means connected for actuating said indicators, and means for causing said contacts to be progressively actuated for periods of successively greater duration, whereby said indicated signals are progressively more impressive.

- 2. In an electromagnetic recording arrangement, the combination of a recording machine with a remote dictating station therefor, a signal indicator at this station, progressyg means movable in response to the recording actuation of said members being 01' progressively different said machine, a plurality of signal contacts, a length, and means connecting said contacts to plurality of contact changing members provided .said signal indicator whereby the indicated sigwith cam surfaces arranged to be successively nals are of diflerent length to indicate the progmoved by said progressive mans to successively ress 01' said recording machine.

close said signal contacts, the cam suri'aces of SEMI BEGUN. 

